Proton VPN Review (2026): Is the Free Tier Actually Safe?

Proton VPN is the name that comes up whenever the conversation turns to safe free VPNs — and it earns it. Most free VPNs pay for themselves by selling what they see; Proton is open-source, keeps no activity logs, operates from Switzerland, and gives its free users unlimited data with no speed cap. In our evidence-based scoring it lands at 89/100, and it's our pick for the free VPN most people should actually install. The only real catch is what the free plan leaves out.

Security and privacy — the core of the score

This is where Proton is strongest, and it's why it scores highest here. Its apps are 100% open source, it operates a no activity logs policy, and it is run from Switzerland, a jurisdiction with strong data-protection law. Crucially, the privacy fundamentals are identical on the free plan: Proton lists Kill Switch (which cuts your internet if the VPN drops, so nothing leaks) and the Stealth protocol (for networks that block VPNs outright) as free-plan features, not upsells.

Every VPN says it keeps no logs. What separates Proton is that the claim has been checked, repeatedly, by someone other than Proton. Its infrastructure — not its privacy policy, the infrastructure — has now passed five consecutive annual audits by Securitum, and Proton publishes the full report openly, with no NDA, no paywall and no customer-only login. That distinction matters more than it sounds: auditing a privacy policy checks that a document says what it says, while auditing the servers checks whether logs are actually being written. Proton also states its no-logs policy has been tested in over 400 legal cases, where it was ordered to produce logs identifying users and could not, because they did not exist. Court orders are a harder test than any audit, and 400 of them is not a rounding error.

Speed: what independent tests actually measured

We don't run our own VPN lab, so we score speed from published independent testing, cited and dated, rather than repeating marketing. Cybernews (test updated January 2026) recorded a baseline of 446.7 Mbps and then measured Proton reaching 466 Mbps on a local server — faster than the unprotected connection, with upload peaking at 147.3 Mbps. vpnMentor (updated June 2026) reported "over 130 Mbps on average," strongest on nearby servers. Both point the same way: on a close server, Proton costs you very little speed.

One claim deserves scrutiny. Proton markets its VPN Accelerator as improving speed "by up to 400%." When vpnMentor measured it, the improvement was 1.2% to 3%. It is a real feature and the direction is positive, but "up to 400%" is a ceiling almost nobody will meet — treat it as marketing, not a spec. And remember Proton rates the free plan's speed as "Medium" by its own description; the "Highest" tier is a paid feature, so heavy 4K streamers and gamers will feel the free ceiling that everyday browsers never will.

The free tier: what you get, what you don't

The free plan is unusually generous: unlimited data, no ads, no activity logging, "free forever," funded by Proton's paying subscribers rather than by selling your traffic. The trade-offs are stated plainly on Proton's own site: one device at a time, "Medium" speed, and servers in 10 countries chosen for you at random rather than a network you pick from. For a single device on a no-logs, open-source free tier with no data cap, that is a fair exchange — and it is exactly why Proton keeps winning the "is any free VPN safe?" question.

Pricing and value

The free plan costs nothing. VPN Plus is $9.99/month, dropping to $3.49/month on the two-year plan (65% off, billed $83.76 for the first 24 months). Note the renewal: after those two years it renews at $83.88 every 12 months, which is roughly $6.99/month — still reasonable, but not the headline $3.49. Paid unlocks 20,000+ servers in 140+ countries, up to 10 devices, streaming, P2P, ad/tracker/malware blocking, and Secure Core multi-hop. Proton Unlimited ($7.99/month on the two-year plan) adds Proton Mail, Drive, Pass and Calendar. There is a 30-day money-back guarantee. Prices shift by region and promotion — these are our 2026-08-19 check.

Free vs. paid, at a glance

The bottom line: at 89/100, Proton VPN is the free VPN we'd actually trust — open-source, no-logs, Swiss, unlimited data — and a genuinely strong paid option if you need the full network. Unless you specifically need a large free-tier server list, it's the easy recommendation.